Ethylene glycol is used as a protecting group for carbonyl groups in organic synthesis. Treating a ketone or aldehyde with ethylene glycol in the presence of an acid catalyst (e.g., p-toluenesulfonic acid; BF3â¢Et2O) gives the corresponding a 1,3-dioxolane, which is resistant to bases and other nucleophiles.
Charles Street and Beacon Hill in Historic Boston, Massachusetts. Shops on Charles Street are an eclectic mix of boutiques, galleries, jewelry stores and home accessory shops with plenty of nearby restaurants, inns and historic sites.
ST. CHARLES. (1860 Online Listing offsite) A post village of Saginaw county situated on the Bad River, at the head of steamboat navigation, 16 miles south-west from Saginaw City, and 103 north-west from Detroit. It is situated on low ground, in the midst of a heavily timbered country.